Like the link 🙂

Number of times a colleague will says looks at these numbers and you can see the trend. As soon as the numbers have been turned into something graphical then the "obvious" trend is replaced with something more truthful. Graphical representation often helps everyone to understand the issues. I have worked on too many 500 page reports and the 80 columns of raw data to have much faith in their use.

But saying that I have also seen the wrong type of charts to be used to hide the details because of politics.